Human chorionic gonadotropin J3-subunit-like immunoreactive material in the plasma of women wearing an intrauterine progesterone contraceptive system \'. S. ORLOFF S. \A\IA\f()'f()

F. C. (;REENWOOD (;.D. BRYA.!\T GREE!\WOOD llonofufu. Hrmwi

A systematic study of the presence of human chorionic gonadotropin t:J·subunit-fike (hCGt:!·i1 0.05). It has been shown that m the same samples LH val-

636 Orloff et al. \m

ues did not significantly change at either I month or ti to 8 momhs after IPCS use.~

Comment This is the first systematic study of hCG/3-Iike immunoactivity throughout the normal menstrual cycle and on subsequent use of an IUD. An extensive discussion on overall cycle lengths and follicular and luteal phase lengths in the cycles of the subjects studied has already been published. 2 Likewise it has aheadv been shown that in the same samples the only significant change with use of the I PCS for 6 to H months that occurred was an increase in estradiol-1713 levels (l>

Human chorionic gonadotropin beta-subunit--like immunoreactive material in the plasma of women wearing an intrauterine progesterone contraceptive system.

Human chorionic gonadotropin J3-subunit-like immunoreactive material in the plasma of women wearing an intrauterine progesterone contraceptive system...
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